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Design 2: IPv6 Addressing with NDRA and DHCPv6 Prefix Delegation
This design (Figure 1) uses NDRA and DHCPv6 prefix delegation in your subscriber access network as follows:
- NDRA addressing is used to provision a global IPv6 address on the WAN link. IPv6 prefixes for NDRA come from a local pool or AAA RADIUS.
- DHCPv6 prefix delegation is used for host device addressing. The delegated prefix can come from a local pool or from AAA RADIUS. The CPE uses the delegated prefix for subscriber addressing. The CPE can use NDRA or DHCPv6 to allocate IPv6 addresses on the LAN.
Figure 1: Subscriber Access Network with NDRA and DHCPv6 Prefix Delegation
If you have a network with a combination of subscriber LANs and single PCs, you can use a combination of design 2 and design 3.
